Acryloylmethylbenzo-15-crown-5 monomer was ,synthesized by reaching 4'-hydroxymethylbenzo-15-crown-5 with acryloyl chloride. The homopolymer of acryloylmethylbenzo-15-crown-5 and its copolymer with acrylamide or N-vinyl pyrrolidone were prepared in benzene by using AIBN as an initiator. From the result on kinetic investigation of the free radical polymerization of acryloylmethylbenzo-15-crown-5 in benzene at 60±0.1℃, a rate eqation of R^p=k^p[M]^0.89[I]^0.47 was obtained. The overall activation energy for the polymerization was found to be 24.6Kcal/mol within the temperature range 50∼70℃. The DSC and TGA thermograms of poly(acryloylmethylbenzo-15-crown-5) showed an exother mic peak for the first degradation of pendant benzo-15-crown-5 as a ligand at about 435℃. The cation binding efficiencies of acryloylmethylbenzo-15-crown-5, poly(acryloylmethylbenzo-15-crown-5) and copolymers of acrylamide or N-vinyl pyrrolidone were evaluated by the extraction method. The results showed that the copolymers containing pendant N-group were more of fective in the extraction of the cation than the corresponding monomer.

Acryloylmethylbenzo-15-crown-5 단량체는 4'-hydroxymethylbenzo-15-crown-5와 acryloyl chloride를 반응시켜 합성하였다. Acryloylmethylbenzo-15-crown-5의 단독중합체와 acrylamide 또는 N-vinyl pyrrolidone과의 공중합체는 AIBN을 개시제로 하여 벤젠용매 하에서 합성하였다. 자유라디칼 반응메카니즘에 의한 acryloylmethylbenzo-15-croen-5의 단독중합 반응 속도는, 벤젠을 용매로 사용하어 60±0.1℃에서 단독중합시켰을때의 중합속도(R_p)는 단량테 농도[M]과 개시제 농도[I]에 대하여 R_p=k_p[M]^0.89[I]0.47의 관계를 나타내었다. 이 단량체의 단독중합 총괄활성차 에너지는 24.6Kca1/mol이었다. 또한 poly(acryloylmethylbenzo-15-crown-5)의 열분석도에 의하면, 420℃에서 ligand인 pendant henzo-15-crown-5의 분해에 의한 발열피이크가 나타났고 435℃ 부근에서 단독중합체의 주사슬이 분해됨을 나타냈다. 또한 acryloylmethylbenzo-15-crown-5 단량체, poly(acryloylmethylbenzo-15-crown-5)단독중합체 그리고 acrylamide 또는 N-vinyl pyrrolidone과의 공중합체들에 대한 양이온 결합특성을 용매추출법으로 측정한 결과, 단량체에 비하여 pendant N-group을 포함하고 있는 공중합체들의 추출효과가 훨씬 뛰어났다.

Keywords: kinetics; vlnylbenzo-crown ether